1272672347 has 2 divisors, whose sum is σ = 1272672348. Its totient is φ = 1272672346.

The previous prime is 1272672299. The next prime is 1272672361. The reversal of 1272672347 is 7432762721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272672347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1272672397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636336173 + 636336174.

It is an arithmetic number, because the mean of its divisors is an integer number (636336174).

Almost surely, 2^1272672347 is an apocalyptic number.

1272672347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272672347 is an equidigital number, since it uses as much as digits as its factorization.

1272672347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 41.

The square root of 1272672347 is about 35674.5335919056. The cubic root of 1272672347 is about 1083.6911729803.

The spelling of 1272672347 in words is "one billion, two hundred seventy-two million, six hundred seventy-two thousand, three hundred forty-seven".